u-boot.git/arch/arm/lib/lib1funcs.S, branch master

arm: lib: add __gnu_thumb1_case_si

2023-04-06T23:10:08+00:00

The assembly for __gnu_thumb1_case_si was taken from upstream gcc and adapted
as width suffix was removed for the add instruction [1].

Signed-off-by: Francis Laniel 
Tested-by: Tony Dinh 
[1] https://github.com/gcc-mirror/gcc/blob/4f181f9c7ee3efc509d185fdfda33be9018f1611/libgcc/config/arm/lib1funcs.S#L2156
Acked-by: Pali Rohár 
Acked-by:  Tony Dinh

arm: lib1funcs.S: Update compatibility with Linux comment slightly

2023-01-20T17:27:06+00:00

At this point, the Linux code for "lib1funcs" has changed rather
dramatically. While a resync would be beneficial, it's outside the scope
of what we need here.  Simply remove the define for CONFIG_AEABI and
tests for it.

Signed-off-by: Tom Rini

arm: ARMv4 assembly compatibility

2022-09-02T17:40:42+00:00

There is currently a problem that U-Boot can not work on ARMv4
because assembly imlementations of memcpy() and some other functions
use "bx lr" instruction that is not available on ARMv4 ("mov pc, lr"
should be used instead).

A working preprocessor-based solution to this problem is found in
arch/arm/lib/relocate.S. Move it to the "ret" macro in
arch/arm/include/asm/assembler.h and change all "bx lr" code
to "ret lr" in functions that may run on ARMv4. Linux source code
deals with this problem in the same manner.

v1 -> v2:
Comment update. Pointed out by Andre Przywara.

Signed-off-by: Sergei Antonov 
CC: Samuel Holland 
CC: Ye Li 
CC: Simon Glass 
CC: Andre Przywara 
CC: Marek Vasut 
CC: Sean Anderson 
CC: Tom Rini

WS cleanup: remove trailing white space

2021-09-30T12:08:56+00:00

Signed-off-by: Wolfgang Denk 
Reviewed-by: Simon Glass

SPDX: Convert all of our single license tags to Linux Kernel style

2018-05-07T13:34:12+00:00

When U-Boot started using SPDX tags we were among the early adopters and
there weren't a lot of other examples to borrow from.  So we picked the
area of the file that usually had a full license text and replaced it
with an appropriate SPDX-License-Identifier: entry.  Since then, the
Linux Kernel has adopted SPDX tags and they place it as the very first
line in a file (except where shebangs are used, then it's second line)
and with slightly different comment styles than us.

In part due to community overlap, in part due to better tag visibility
and in part for other minor reasons, switch over to that style.

This commit changes all instances where we have a single declared
license in the tag as both the before and after are identical in tag
contents.  There's also a few places where I found we did not have a tag
and have introduced one.

Signed-off-by: Tom Rini

arm: Migrate SYS_THUMB_BUILD to Kconfig, introduce SPL_SYS_THUMB_BUILD

2017-03-19T00:28:01+00:00

Today, we have cases where we wish to build all of U-Boot in Thumb2 mode for
various reasons.  We also have cases where we only build SPL in Thumb2 mode due
to size constraints and wish to build the rest of the system in ARM mode.  So
in this migration we introduce a new symbol as well, SPL_SYS_THUMB_BUILD to
control if we build everything or just SPL (or in theory, just U-Boot) in
Thumb2 mode.

Signed-off-by: Tom Rini 
Acked-by: Siarhei Siamashka

arm: lib: Fix fix push/pop-section directives

2016-06-04T23:25:14+00:00

Repair typos in the previous "arm: lib: fix push/pop-section directives"
patch, which prevented VCMA9 board from building.

Signed-off-by: Marek Vasut 
Fixes: b2f1858455e9 ("arm: lib: fix push/pop-section directives")
Cc: Tom Warren 
Cc: Simon Glass 
Cc: Masahiro Yamada 
Cc: Stephen Warren

arm: lib: fix push/pop-section directives

2016-06-03T19:14:11+00:00

With the existing code, function symbols are defined in .text, and the
body is defined in .text.xxx. This causes (at least some version of) the
linker not to emit the function body into the final binary, since it's
part of a different section to the symbols being referenced. This of
course causes a wide variety of failures.

This change moves the push/pop-section directives before the function
symbols, and after any relate ENDPROC macro invocations, so that symbols
and bodies are all in the "pushed" sections, and thus the function bodies
are emitted into the binary.

This solves (at least) the boot problems currently seen on Tegra systems
that use SPL (i.e. all ARMv7 Tegras).

Fixes: 13b0a91a6d48 ("arm: lib: Split asm symbols into different .text subsections")
Cc: Marek Vasut 
Cc: Tom Warren 
Cc: Simon Glass 
Cc: Masahiro Yamada 
Signed-off-by: Stephen Warren

arm: lib: Split asm symbols into different .text subsections

2016-06-03T01:21:47+00:00

Split each symbol in lib1funcs into different .text.foo section instead
of placing all of them into plain .text . This allows the linker to collect
and discard unused assembler symbols.

Signed-off-by: Marek Vasut 
Cc: Albert Aribaud 
Cc: Masahiro Yamada 
Cc: Simon Glass 
Cc: Tom Rini 
Reviewed-by: Tom Rini

arm: lib: Import Thumb1 functions

2016-06-03T01:21:47+00:00

Import functions into lib1funcs.S which are required for Thumb1
build. These functions come from gcc 5.3.1 release.

Signed-off-by: Marek Vasut 
Cc: Albert Aribaud 
Cc: Masahiro Yamada 
Cc: Simon Glass 
Cc: Tom Rini 
Reviewed-by: Tom Rini